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taro siwa updated ACCUMULO-4798: -------------------------------- Comment: was deleted (was: a) > Copying Stat in ZooCache is slow > -------------------------------- > > Key: ACCUMULO-4798 > URL: https://issues.apache.org/jira/browse/ACCUMULO-4798 > Project: Accumulo > Issue Type: Improvement > Affects Versions: 1.7.3, 1.8.1 > Reporter: Keith Turner > Assignee: Keith Turner > Priority: Major > Labels: pull-request-available > Fix For: 1.9.0, 2.0.0 > > Time Spent: 1h 40m > Remaining Estimate: 0h > > The ZooKeeper cache code caches Zookeeper stats. When a stat is requested > from the cache it copies it. The ZK stat class offers no good way to copy > other than serialize and deserialize. The code currently does this and its > slow. All code in Accumulo only uses one field from stat, so it would be > much better to create a simple class that has this one field and can quickly > copy. > > The stat is used very frequently in the metadata cache code to check if a > tserver still holds its lock. > -- This message was sent by Atlassian JIRA (v7.6.3#76005)